Hi all.
I was reading the latest article about the latest research on magnesium diboride with the possibility of using similar materials to achieve Tcs of above 200K, and suddenly had a thought.
It has been well established that superconductors exclude a magnetic field, an effect which extends into the realm of radio waves and visible/infrared light. So it occurs to me that a simple method of detecting candidate materials in a bulk sample would be to affix said sample to a Peltier module with a temperature sensor, with a radio emitter (possibly as simple as a Gunn diode) and detector assembly to detect changes in transmission and/or reflection as well as interference patterns.
Even a few parts in a million of a near-room temp material should affect the transmission of radio signals through the material at the critical temperature, where an inert sample will have no detectable effect.
Has anyone published a paper concerning this possibility?
Thanks, -A